Bangkok , Thailand -LRB- CNN -RRB- -- The younger son of political activist Aung San Suu Kyi left Myanmar Tuesday after a long-awaited visit with his mother , from whom he 'd been separated for a decade .

Kim Aris was seen arriving back in Bangkok , Thailand , later in the day .

Aris had been in Myanmar for a little more than two weeks visiting with his mother .

He last saw his Nobel Peace Laureate mother in 2000 , when he spent about two weeks with her , according to one of her attorneys .

Suu Kyi was released from house arrest on November 13 , after spending most of the past 20 years under house arrest or in prison .

Suu Kyi release came after national elections in Myanmar .

Suu Kyi and her National League for Democracy party boycotted the November 7 elections , faulting the country 's ruling military junta .

Before the election , the regime had enacted a new law that forced the Suu Kyi 's party to choose between honoring her as its leader and risking the party being declared illegal , or ejecting Suu Kyi from the party and contesting the elections .

Generals in Myanmar refused to allow international monitors to oversee the elections and overhauled Myanmar 's constitution in a way critics say is aimed at tightening the regime 's grip .

The constitution now requires more than 100 military nominees in parliament . Myanmar , also known as Burma , has been under military rule since 1962 .

CNN 's Kocha Olarn contributed to this report .

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Suu Kyi was released from house arrest on November 13

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They had been separated for a decade

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The political activist has spent most of the past 20 years under house arrest or in prison